REPORT ON THE PYCNOGONIDA. 49 



but they are almost all brokeu at the extremity, their numbers are respectively 14, 14, 

 13, 13. Ou the fourth joint hairs are scarce, on the fifth there are a great many small 

 hairs vertically implanted on the surface of the joint, the hairs of the sixth and the four 

 last joints are also numerous: they are larger than those of the fifth joint. 



The legs are very slender : in a male of 8 mm. their length is nearly 32 mm. The 

 second joint is more than twice as long as the third, the fifth joiat is only a little longer 

 than the fourth ; the sixth is once and a half as long as the fifth. The two tarsal joints 

 are nearly equal. The claw is short, being one-third the length of the last joint of the 

 leg. The accessory claw is not half as large as the claw. The first joints of the leg are 

 nearly smooth, but from the sixth to the eighth they are covei'ed with very small 

 rouo'h hairs. 



The colour of this species is a dark brown, much darker than is the case with the 

 other species. There are in all three specimens, of these two are mature males (one fur- 

 nished with eggs), the third is a very small one with broken accessory legs. I consider 

 it a young male. Genital pores I observed only on the second joint of the two last legs. 



Habitat. — This species was found ofi" Kerguelen Island at a depth of 25 fathoms. 



Station 149. January 17, 1874. Lat 49° 40' S., long. 70° 28' E. Off Eoyal 

 Sound. Depth, 25 fathoms. 



Observations. — This species shows a certain reseml^lance to Nymphon gracilii^es, 

 Miers. Yet there are too many small differences for me to feel justified in consider- 

 ing the two forms as identical. The form of the oculiferous tubercle is not as figured 

 b}' Bohm, the claws of the mandibles are shorter and not so straight as in Nymiilion 

 (jvacilipes, Miers (after Bohm, Pycnogon. des Museums zu Berlin, Monatsb. der K. Akad. 

 der Wiss. zu Berlin, p. 170, 1879) ; the length of the fourth joint of the accessory legs is 

 different,' the length of the two tarsal joints, of the claw, the colour of the whole animal, 

 so characteristic in my Nymphon fuscum, is quite different from that described by Bohm 

 (fast weiss bis hellbriiunlich, Bohm, loc. cit., p. 172). There can be little doubt, how- 

 ever, that these two forms are closely allied. 



Nymp)hon brevicauclatum, Miers (PI. IV. figs. 12, 13; PI. V. figs. 1-5. Nymphon 

 hispidimi, n. sp., is marked on the plates). 



Nymphon hrevicaudatuin, Miers, Ann. and Mag. of Nat. Hist., vol. xvi. p. 107, 1875 ; Crustacea of 

 Kerguelen Island, Phil. Trans. Lond., vol. clxviii. (extra vol.) pp. 200-214, pi. xi. fig. 8, 1879. 



Nijmphon Iwrridmn, Bohm, Pycnogoniden des Museums zu Berlin, Monatsber. der K. Akad. 

 der Wiss. zix Berlin, 1879, p. 172, taf. i. fig. 3-3/. 



Descripition. — The body of this species is very robust, and has the lateral processes 

 scarcely separated. The proboscis is comparatively short and bears a small mouth; the 



1 Bohm, loc. cit., taf. i. fig. \0, represents the si.\tli joint of tlie ovigtrous leg as furnished with (k-nticulated spines. Of 

 course this is a mistake. 



(ZOOL. CH.'iLL. EXr. PART X. — 1881) K 7 



